US hunts three California inmates after brazen jailbreak

US authorities are hunting three California prisoners, including a man charged with murder, who staged a brazen jailbreak that reportedly involved rappelling from the roof of a maximum-security facility using bed sheets.

Jonathan Tieu, Bac Duong and Hossein Nayeri went missing from the Orange County Men's Central Jail in Santa Ana, in southern California on Friday, officials said.

"The three escapees ... are dangerous criminals," Orange County Sheriff Sandra Hutchens warned.

"My investigations team is working around the clock with the Orange County District Attorney's Office, the Orange County Probation Office, the US Marshals and the FBI."

"I am confident that this collaborative effort will result in returning these inmates to where they belong -- behind bars," Hutchens added in a statement.

The FBI and US Marshals Service have offered a reward of up to $71,000 for information leading to the arrest of the fugitive trio.

The Los Angeles Times, quoting Hutchens, reported that the inmates got away by managing to get past security points in at least three areas. They apparently accessed the jail's plumbing system, used tools to cut through metal bars and made a makeshift rope using bed sheets to rappel from the facility's roof.